METHOD FOR PRODUCING A BEARING RING, IN PARTICULAR FOR A TAPERED ROLLER BEARING
A method for producing a bearing ring ( 20, 29 ), in particular a tapered roller bearing ring, including the following steps: making available an annular disc ( 8; 9 ), and forming the disc ( 8; 9 ) to provide a substantially cylindrical bearing ring and producing a raceway ( 19; 28 ) of the bearing ring in a single operation by extrusion. According to the invention, the method achieves the object of providing a simple method for producing bearing rings, in particular for tapered roller bearings, which delivers high unit numbers and in which it is possible to dispense with a finishing operation.
1 . A method for the production of a bearing ring, comprising the steps: providing a circular disc and deforming the disc into an essentially cylindrical bearing ring and producing a track of the bearing ring in a single processing step by way of extrusion.
2 . A method according to claim 1 , wherein the extrusion is performed as a forward extrusion.
3 . A method according to claim 1 , wherein the extrusion is performed as cold compressing.
4 . A method according to claim 1 , wherein the bearing ring comprises a ledge, and the ledge is produced during the extrusion processing step.
5 . A method according to claim 1 , wherein the bearing ring comprises a circumferential groove, and the groove is produced in the extrusion processing step.
6 . A method according to claim 1 , wherein an inner ring is produced from a first disc and an outer ring of the bearing from a second disc, the method further comprising first separating the two discs from a common circular blank.
7 . A method according to claim 1 , wherein the disc is produced from a hardenable steel material.
8 . A bearing ring produced according to claim 1 .